'The
entire universe is at stake and I'm locked in here with another incarnation of
myself, and not even one of the good ones!'

More than
one TARDIS lands on a barren ice world. The Fifth
Doctor, Adric, Nyssa and
Tegan find a once ordered society on the verge of collapse, as rebels wage a
dirty war with Scientifica, the ruling elite. All that stands between order and
anarchy is the massed presence of an Adjudicator peacekeeping force.

But is peace the only reason for the Adjudicator garrison?
What exactly has been discovered deep below the planet's surface? Who are the
mysterious Feratu? And why is telling a ghost story a criminal offence?

The fifth Doctor sides with the cause of justice and fairness
as always. But, as a threat to the universe unfolds, he finds himself in
conflict with his past... and his future.